发挥南澳的区位优势

南活是广东省最近台湾的突出部、是台胞的祖居地、有丰富的港湾和海岛资源。烟墩湾是粤东、闽南最具开发价值的深水良港。近几年，南活的开发建设，远远超过过去４０年的总和。发挥南活对台的区位优势，争取首批直航台湾。     

海北州光、热、水资源分布特征及其在农牧生产中利用

本文分析了海北州光热水资源分布特点及其在农牧业生产中的利用。分析表明：海北州太阳辐射强，日照时间长，热量条件北部好于南部；降水主要集中于夏季，大降水出现的概率小；并依据气候资源对农牧业和生态环境的影响把海北地区划分为三个农牧业生态区域，同时提出了依据气候资源合理进行农牧业产业结构调整以及在各区发展特色农牧业和生态环境保护的建议。     

闽东南长乐-南澳断裂带“片麻状”浆混杂岩的厘定及其地质意义

近年来的区域地质调查在闽东南长乐-南澳断裂带中,多处新发现白垩纪(辉长)闪长质和二长花岗质岩浆经机械的、化学的混合形成各种浆混岩类,与两混合端元岩石共同构成浆混杂岩,成岩后还受到应力作用。它们因特殊的结构构造而长期被归入混合花岗岩或片麻状花岗岩类。描述了泉州市肖厝、福清市高山等地浆混杂岩的野外地质特征,并与莆田市和福清市的典型变质变形花岗岩类进行了对比,指出这3类岩石之间有明显的区别,浆混杂岩可能形成于主变质变形期之前早白垩世早期的伸展环境中。     

宽域GPS增强系统

美国得克萨斯州的OmniSTAR公司推出一款名为8300HP型宽域GPS增强系统，该系统可为陆基用户提供高性能的定位服务，据报道OmniSTAR8300HP型系统可提供分米级的水平精度和20cm的垂直精度，该系统可在1525至1559MHz频率上进行自动扫描，它由7V至15V直流电供电，功耗为5W。该系统有三个RS-232串行端口。脉冲信号输入速率为1个脉冲每秒，定位更新率为5Hz。并且有300至921600bps的数据率，它可供GIS、农业、水下自主运载工具和遥控运载工具、地籍测量、管网、电缆、光纤精确铺设、海岸清淤、航空电子测试、地震监测和起重设备监测等业务使用。     

提问蔚蓝

<正>1.下列有关2010年海地地震说法正确的是哪项?A.经济落后抗震救灾能力有限B.地形多山、震中附近人口稀少,人员伤亡少C.海岛交通便利利于救援D.气温高不易疫病发生和传播2.下列关于台风的叙述中,正确的一项是什么?A.台风多形成于赤道洋面B.台风多发生在秋冬季节C.越往台风中心风力越强D.台风能引起海啸和风暴潮3.瓦萨沉船博物馆是众多博物馆中一座独具特色的博物馆,它是专为展览一艘从海底打捞上来的     

波浪谷

帕里亚峡谷（Paria Canyon）跨越美国犹他州和亚利桑那州,在这片由悬崖、峡谷,山丘组成的区域里,隐藏着一个名叫波浪谷的大自然砂岩雕塑艺术品。     

甘南 零度等温线上的人间仙境

甘南藏族自治州是全国十个藏族自治州之一．地处青藏高原东北边缘,南与四川阿坝州相连,西南与青海黄南州、果洛州接壤,东面和北部与本省陇南、定西、临夏毗邻。以物产丰富、环境优美被称作人间仙境——香巴拉。     

长乐-南澳韧性剪切带~(40)Ar/~(39)Ar热年代学研究

采自长乐-南澳韧性剪切带的5个单矿物~(40)Ar/~(39)Ar坪年龄分别为107.9 Ma(Mus)、108、2Ma(Bi),107.1 Ma(Bi),109.2 Ma(Hb)和117.9 Ma(Bi),与对应的等时线年龄一致.它们记录了长乐-南澳韧性剪切带的形成时间.样品在不同封闭温度下的年龄重叠说明,作为闽粤沿海碰撞造山带主体之一的长乐-南澳韧性剪切带在形成后(107～118 Ma)经历了快速的初始冷却上升.结合钾长石K-Ar年龄研究和相关的年代学资料表明,该带后期(107～70 Ma)冷却上升速率有所减缓,大约为0.18～1.12mm/a.     

http://www.sciencedirect.com/science/article/pii/S167498711200148X

The Earth was born from a giant impact at 4.56 Ga. It is generally thought that the Earth subsequently cooled, and hence shrunk, over geologic time. However, if the Earth's convection was double-layered, there must have been a peak of expansion during uni-directional cooling. We computed the expansion-contraction effect using first principles mineral physics data. The result shows a radius about 120 km larger than that of the present Earth immediately after the consolidation of the magma-ocean on the surface, and subsequent shrinkage of about 110 km in radius within about 10 m.y., followed by gradual expansion of 11 km in radius due to radiogenic heating in the lower mantle in spite of cooling in the upper mantle in the Archean. This was due to double-layered convection in the Archean with final collapse of overturn with contraction of about 8 km in radius, presumably by the end of the Archean. Since then, the Earth has gradually cooled down to reduce its radius by around 12 km. Geologic evidence supports the late Archean mantle overturn ca. 2.6 Ga, such as the global distribution of super-liquidus flood basalts on nearly all cratonic fragments (>35 examples). If our inference is correct, the surface environment of the Earth must have undergone extensive volcanism and emergence of local landmasses, because of the thin ocean cover (3–5 km thickness). Global unconformity appeared in cratonic fragments with stromatolite back to 2.9 Ga with a peak at 2.6 Ga. The global magmatism brought extensive crustal melting to yield explosive felsic volcanism to transport volcanic ash into the stratosphere during the catastrophic mantle overturn. This event seems to be recorded by sulfur mass-independent fractionation (SMIF) at 2.6 Ga. During the mantle overturn, a number of mantle plumes penetrated into the upper mantle and caused local upward doming of by ca. 2–3 km which raised local landmasses above sea-level. The consequent increase of atmospheric oxygen enabled life evolution from prokaryotes to eukaryotes by 2.1 Ga, or even earlier in the Earth history.